tree 0d1d80ababa9ca32310a5b4454329a36dae1bc03
parent ca1ec1dee21e26b27a878a8b1535789e5953e4a9
author Lei Zhang <thestig@chromium.org> 1670031086 +0000
committer Pdfium LUCI CQ <pdfium-scoped@luci-project-accounts.iam.gserviceaccount.com> 1670031086 +0000

Force builds to use C++17 in standalone builds.

The C++ Style Guide [1] currently recommends C++17, but Chromium is
using C++20 for the most part. [2] Change standalone PDFium to use its
own BUILDCONFIG.gn, which overrides the C++ standard config to always
use C++17. This allows PDFium to roll DEPS for //build and get all the
benefits, without surprises to the C++ standard config.

Note that this does not control the build config when PDFium is
embedded in another project.

[1] https://google.github.io/styleguide/cppguide.html#C++_Version
[2] https://crbug.com/1284275

Bug: pdfium:1932
Change-Id: I6b56a392a2b8837504540d48155cb3797afc2df5
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/101970
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: K. Moon <kmoon@chromium.org>